Continuous heating-furnace.



PATENTED DEC. 31, 1907.

J. REULEAUX. CONTINUOUS HEATING FURNACE.

APPLICATION FILED 00T.5. 1906.

a SHEETS-SHEET 1.

PATENTED 11110.31, 1907. N

APPLICATION FILED 0015,1906.

' 5 SHEETSSHEET 2.

m MwRN Witnesses PATENTBD DEC. 31, 1907.

J. REULEAUX. CONTINUOUS HEATING FURNACE.

APPLICATION FILED OCT-5. 1906.

' 5 SHEETS-SHEET 3.

PAIENTEDDEG. 31, 1907.

7 J. REULEAUX.

CONTINUOUS HEATING FURNACE.

APPLICATION FILED OUT-5. 1906.

6 SHEETS-SHEET 4.

P d w. 4

PATENTED DEC. 31, 1907.

J. REULEAUX. CONTINUOUS HEATING FURNACE.

APPLICATION FILED OGT.5. 1906..

5 SHEETS-SHEET 5.

NN MN /vdmuom m 7......- I M 4-4, Fig. 1.

.TOSEF REI'LEAUX. OF \YILKINSBIIRG, PIZNXSYLVANI'A,

A SSIHNO ll TO ALEXANDER L.'\ L'UHLIX, Ol II'WlSIKURG, PENNSYLVANIA.

CONTINUOUSv HEATING-FURNACE.

Specification of Letters Patent.

Patented Dec. 81, H9 07.

Lppl'iatim Iile'l October 5. 1906. Serial No. 337.592v

'1' all whom it may concern:

3e it known that .l, JUSEF Rm'Lnufx, of 'ilkinsburg, in the county ofAllegheny and State of Pennsylvania, have invented certain new anduseful Improvements in (ontinuous lleating-Furnaces; and i do herebydeclare. the following to be a full, clear, and exaet description of theinvention, such as will enable others skilled in the art to whic itappertains to makeand use the same.

The primary object of this invention is to provide improved mear forovercoming the formation of dark streaks on slabs 'orbilletsconsequentupon their contacting with the cooled supports upon which they bearWhile being heated.

A further object is to allow of the free passage of the heatbetween thetransverse piers and the supports, and to keep the supporting legs andpiers cool.

The invention Will be l'iereinafter fully set forth and particularlypointed out in the claims In the accompanying drawings, Figure 1 is avertical longitudinal sectional view of a furnace embodying myimprovements. Figs. 2 and 3 are horizontal sectional views on lines 22,and 3-3, respectively, Fig. 1. Fig. 4 is a Vertical sectional view online Fig. 5 is a similar view on line 5-5, same figure. Fig. 6iis a planview of a portion of one of the supporting rails. Fig. 7 is a centrallongitudinal sectional view thereof. 'Figs. 8 and 9 are cross-sectionalvieWson lines S--8' and 9-9, respectively, Fig. 7. Fig. 10 is a planview, and Fig. 11 a longitudinal sectional View of that portion of asupporting rail located above a transverse pier. Figs. 12 and 13 areplan and longitudinal sectional views of a slight modiiication.

Referring to the drawings, 1 designates the combustion chamber; 2 thelongitudinally-extended supports; 3 the transverse piers, and 4 thelongitudinal piers upon which the supports 2 are mounted. The wastegases or products of combustion upon reaching the far or receiving endof the furnace pass downwardly into a chamber 5, and

thence, through a series of conduits 6 to the other or discharge end ofthe furnace, and thence into a chamber 7, and thence back uponthcmselves'through a second, or lower, series of conduits 8 leading lothe stackor outlet lluell. The two series of conduitsfi and 8 areloealedin the air-heating chamber lnto which air is mtrmluced throughports I 10, one of which is shown in Fig. 1, and is caused to traveltortuously over and benealh partitions 12 and 13. The several superposedrows of conduits 6 and 8 are spaced apart by blocks 1a to permit of athorough circulation of the air. The latter being thus preheated passesinto achamber 15 and through openings 16 into the gas supply port- 17.The mixture of air and gas then enters the heating chamber through thefuel port 18, over which extend the billet supports 2, and beneath whichis the cinder pocket 19. the air is the subject of separate applica tionfor patent. i

The supports 2 are made hollow so as to permit of the constant How ofwater or other cooling medium. To overcome the dark streaks usuallypresent on the undersides of the slabs or billets, 1 form the supportswith abrupt drops or steps at a point coincident;

with, or in close proximity to, the fuel port lets"pr viously bearing onthe supports will be held away therefrom, and subjected to. the direcactl :n of the heat. For this purose each supporting rail, at a pointnear the fiiel port, is dropped and prolonged or continued on a lowerplane substantially parallcl with the upper portion, so asto form,-at

This arrangement for heating the end of its upper portion, an abruptshoulder 20 against the edge of which each slab or billet will restwhile the lower forward edge bears upon the lower prolongation. Bothportions of each rail are hollow, and in the partition 21 are holes orports 22 for the passage of the cooling medium. Preferably each rail isof triangular formation, in crossseotion, but it is manifest that anysuitable formation may be adopted.

To dispense with the brick legs ordinarily built upon the transversepiers, to form bearings for the supporting rails, and which legs areusually destroyed by the-intensity of the heat, 1 form the supportingrails 2 with depending hollow legs 23 which bear directly upon and coverthe upper aces of thetransverse piers 3. These legs are supplied withwater from the supporting rails, ports .24 per mitting of freecirculation and if desired a partition 25 may be lochted intermedinl ethe length of each leg so as to divert the circulation of the water orother cooling medium. The depending leg may be of any desired width,thus enabling me to secure ample base for the supports, and yet permitthe heat products to have free access to and around the supports and thewater bearing legs. The coolmg medium within the legs also cools thelarge surface of the supporting pier, and prevents its destruction bythe action of the flame. Dispensing with the brick legs results in agreat saving both in construction and maintenance.

It will be understood that the slabs or billets are introduced into theheating chamber at the receiving end 26, and are gradually forcedtherethrough, upon the supports 2, by any suitable mechanism, not shown.As theyreach the point of highest heat, each will in its turn assume theinclined position indi cated by the foremost billet Fig. 1, therebypermitting the dark streaks on the underside thereof to be removed bythe direct action of the heat, whereupon billet will be discharged fromthe furnace he delivery or outlet end 27.

Not only am I enabled to .fiectively remove the dark streaks, but thelife of the furnace is greatly prolonged by the hollow water legsdisplacing the brick legs heretofore used.

I claim as my invention:

1. In a continuous heating furnace having its point of highest heat ator near one end, supports for the material being heated 6X- tended fromthe receiving end of the furnace over such point of highest heat, and ator near such point formed with a 'step or shoulder and a prolongation ona'lower plane, the underside of the material being held away from thesupports in passing to the lower portions thereof.

2. In a continuous heating furnace'having its point of highest heat atornear one end, supports for the material beingheated extended from thereceiving end of the furnace over such having a prolongation on a lowerplane, the upper and lower portions being substantially parallel and onside of the material 1s held away frdm the from the upper pointofhighest heat, each support such planes that the under l I l support inpassing from the upper to the lower portions thereof.

4 3. In a continuous heating furnace having its point of highest heat ator near one end, supports for the material being heated extended fromthe receiving end of the furnace over such point of highest heat, eachsupport being hollow and at. or near such point having a prolongation ona lower plane with passages for a cooling medium between the upper andlower portions of the su port, a shoulder being formed by the end of tio upper portion of the support for causing the material to occupy aposition different from that which it occupies when wholly on either theupper or lower portions of the supports.

4. In a continuous heating furnace having transverse piers, supports forthe material being heated composed of rails extending lengthwise of thefurnace -and having depending legs forming parts thereof constructed tocontain a cooling medium and form. a covering for the upper faces of thepiers upon which they rest.

In a continuous heating furnace having transverse piers, supports forthe material being heated composed of hollow rails extending lengthwiseof the furnace and designed to convey a cooling medium, and de pendinghollow legs forming parts of said rails and communicating therewith,said legs being constructed to form a covering for the upper faces ofthe piers upon which they rest.

6. In a continuous heating furnace having transverse piers, being heatedcomposed of hollow rails designed to convey a cooling medium, dependinghollow legs communicating with such rails and forming coverings for theupper faces of said piers, and means for diverting the cooling mediumfrom the rails into said legs.

p In testimony whereof, I have signed this specification in the presenceof two subscribmg witnesses. I

JOSEF REULEAUX.

l/Vitnesses:

FRANCIS S. MAeUmE, VERNON E. Wnsr.

supports for the material

